Web cutting and folding machine.



0. T. GUNDALL. WEB CUTTING AND FOLDING MACHINE.

APPLIOATION FILED NOV. 30, 1910.

Patented Sept. 2, 1913.

O. T. CUNDALL.

WEB CUTTING AND FOLDING MACHINE.

APILIOATION FILED NOV. 30, 1910.

Patented Sept. 2, 1913.

2 SHEETS-SHEET 2.

1,072,09&.

l a/e? Wneaaea:

dam M one of the cutters and the top NlThU @TATEQ PATENT tll hlfihl.

cons'rau'rr. CUNDALL, or s'roivnvccron, conuncrrcur, nssrenon T0 0. B. COTTRELL a sons coMrAnY, or new YORK, N. Y.. A C'ORI'ORA'IIQN or new JERSEY.

WEB CUTTING AND FOLDING MACHINE.

rovaooa.

Specification of Letters l atent.

Patented Sept. 2, 1913.

Application filed November 30. 1910. Serial No. 594,939.

To all whom i may concern Be it known that I, CONSTANT T. CUN- BALL, a citizen of the United States, and resident of Stonington, in the county of New London and State of Connecticut, have invented a new and useful Improvement in Web Cutting and Folding Machines, of which the following is a specification.

In vwell)- cutting and folding machines, the webs as they ass from the cutters to the folding cylin ers are liable to become choked by the passing of the webs between of the guide fingers which are usually lnterposed between the cutters and the folding cylinders. This choking is frequently caused by the natural curl of the web or by reason of rough or torn edges of the web or because of the static electricity in the web! The choking of the web frequently causes the machine to break down and thus reduce the output of the machine as well as damaging a considerable portion of the web itself.

The object of the present invention is to obviate this choking of the webs and the consequent breaking down of the machine, by the provision of an air control for the webs as they pass from the cutters to the folding cylinders. 0

A pnactical embodiment of tll6 1J1VI1tlOI1 is represented in the accompanying drawings, in which- Figure 1 represents 1n side elevation, so much of a web cutting and folding machine as will give a clearuuderstandmg of any invention. Fi 2 is? detail section showing the cutters, t e fol ing cylinders and the means for controlling the web as it passes from the cutters to the folding cylinders. Fig. 3 is a back view of the imperforate ide plate along which the web is passed mm the cutters to the folding cylinders, the air blast pipe from the blower for the back of the sheets being also illustrated in its osition with respect to the guide plate. ig. 4 is a front view of the same, portions of the guide late being broken away to show the moutlis of the bottom air discharge nozzles, and Fig. 5 is a front View of the air blast pipes from the blower for directing air against the front of the web as it passes from the cutters to the folding cylinders.

The cooperating rotary cutters are denoted by 1 and 2, and their respective blades are denoted by 3 and 4:.

The cooperating folding cylinders are denoted by 5 and 6, the cylinder 5 being provided in the present instance, with the fold ing jaws 7 and the cylinder 6 with the folding blade 8.

The set of grippers on the. cylinder '6 are denoted by 9. This cylinder 6 may be a collecting cylinder as well as a folding cylinder, if so desired. An imperforate guide plate 10, in the present instance, of sheet metal, is interposed between the cutters and folding cylinders, the upper edge of which guide plate is preferably curved slightly backward, as shown at 11, toward the cutter 1. A compressed air source is provided, which source in the present instance, is shown as a blower 12, mounted on the machine frame. This blower is shown as provided with a main discharge pipe 13, from which lead the vertical branches 14:, 15, 16, of air discharge pipes, the horizontal branches of which are denoted by 17, 18, 19. The horizontal branch 17 is located in close proximity to the back of the guide plate 10 and is provided with one or more upwardly directed nozzles 20, and one or more downwardly directednozzles 21. In the resent instance, four of these upwardly directed nozzles 20 are shown, the mouths of which nozzles are arranged to direct a blast of air against the concave face of the inwardly turned upper edge 11 of the guide plate 1.0. These nozzles 20 serve to strip the advance edge of. the web from the blade 3 on the cutter 1, if the web should tend to cling to the said blade and pass between the upper edge of the plate 10 and the cutter 1. 'The mouths of the downwardly directed nozzles 21 are arranged to direct a blast of air against the advance edge of the web as it reaches the folding c linders for forcing the advance edge towar the cylinder 6, to insure the grasping of the edge by the grippers 9. The lower edge of the imperforatc guide plate 10 is preferably provided with recesses 22, opposite the mouths of the downwardly directed nozzles 21, so as to facilitate the action immediately bo d scribed.

The horizontal branch 19 of the pipe 16 19, is provided with a longitudinal series 0 holes 23 arranged to discharge jets of air againstthe front face of the web for performing two functions; first, for preventing the web from clinging to the blade 4; of the cutter 2, and second, for keeping the web from bulging out from the guide plate 10. Ihe horizontal branch 18 of the pipe 15, 18, is provided with a longitudinal series of holes 24 arranged to discharge jets of air in a direction to assist in keeping the web from bulging out from the guide plate 10. The importance of keeping the web snugly against the guide plate 10 is that if the web were permitted to bulge, it would draw the leading edge of the web back so that the grippers 9 would close ahead of the leading edge and thus permit the sheet as it is cut from the Web, to be uncontrolled, causing it to either fall to the floor or become wedged or jammed between the two cylinders. The passage of air to. the several horizontal branches 17, 18, 19,,from the blower pipe 13, may be controlled by manually operated valves 25, 26, 27, in the vertical branches 14, 15, 16.

It is evident that various changes might be resorted to in the construction, form and arrangement of the several parts without departing from the spirit and scope of my invention, the object of the invention being to provide an air control for the web as it passes from the cutting'mech'anism to the folding mechanism, to absolutely preventthe choking of the web and for insuring the proper passage of the web through the machine. It is furthermore to be understood that this device is particularly well adapted for use in connection with that class of machine in which a plurality of associated webs are passed through the cutters where it is particularly diflicult to control the movement of such associated webs.

The parts shown and. described but not claimed herein form the subject-matter of a divisional application filed by me January 5, 1911, Serial Number 600988.

What I claim is:

I -1. In a machine of the character described, rotary cutters, folding. cylinders, an interposed web guide and an air blast mechanism for insuring thepassage of the advance edge of the web from the cutters to the guide and novaoea from the aide to the'folding cylinders and for contro ling the web as it passes along the guide.

2. In a machine of the character described, rotary cutters, folding cylinders, an interposed web guide plate and means for discharging blasts of air at the top of the guide plate for insuring the passage of the web from the cutters on to the" guide plate and means for discharging air at the bottom of the guide plate for forcing the advance edge of the web against one of the folding cylindersforinsuring its engagement thereby.

3. In a machine of the character described, rotary cutters, folding cylinders, an interposed guide plate and means for discharging blasts of air against both sides of the web at the top of the guide plate for insuring the passage of the web from the cutters on to the guide plate.

4:. In a machine of the character described, rotary cutters, folding cylinders, an interposed guide plate, means for discharging blasts of air against both sides of the web at the cutters for insuring the passage of the web on to the guide plate and means for dis charging a blast of air against one side of the Web at the cylinders for forcing the advance edge of the web against one of the cylinders.

5. In a machine of the character described, rotary cutters, folding cylinders, an interposed guide plate, means for discharging blasts of air against both sides of the web at the cutters for insuring the passage of the web on tothe guide plate, means for discharging a blast of air against one side of the web at the cylinders for forcing the advance edge of the web against one of the cylinders, and means for discharging a blast of air against the other side of the web for preventing the web from bulging as it passes along the guide plate.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this fourteenth day of November A. D. 1910.

CONSTANT 'I. CUNDALL.

IVitnesses:

A. R. S'rILLMAN, Gr. Bnnoron. 

